A new genus of sigmodontine rodent from eastern Brazil and the origin of the tribe Phyllotini

Pardiñas, Ulyses F. J.; Lessa, Gisele; Teta, Pablo; Salazar‐Bravo, Jorge; Câmara, Edeltrudes M. V. C.

doi:10.1644/13-mamm-a-208

Cited by 37 publications

(25 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This new scenario seems far more likely, given recent evidence that Lake Pebas would have made much of the Orinoco and Amazon basins uninhabitable during the earliest phase of sigmodontine colonization in South America (de Fátima Rossetti et al 2005, Antonelli et al 2009, Tejada-Lara et al 2015, Antoine et al 2016). This agrees closely with recent evidence supporting an important role of the lowlands and eastern South America in sigmodontine diversification Patton 1999, Gonçalves et al 2018), particularly for Akodontini and Phyllotini (Salazar-Bravo et al 2013, Pardiñas et al 2014, Parada et al 2015. This agrees closely with recent evidence supporting an important role of the lowlands and eastern South America in sigmodontine diversification Patton 1999, Gonçalves et al 2018), particularly for Akodontini and Phyllotini (Salazar-Bravo et al 2013, Pardiñas et al 2014, Parada et al 2015.…”

Section: Sigmodontine Biogeographical Historysupporting

confidence: 91%

“…However, developing understanding of distributions and phylogenetic relationships has led some to propose a different scenario, one including an origin outside the Andes for at least some of the main tribes (Smith and Patton 1999, Salazar-Bravo et al 2013, Leite et al 2014, Pardiñas et al 2014, Parada et al 2015. Notably, the origin of Akodontini would then be linked to eastern South America (D'Elía and Pardiñas 2015, Pardiñas et al 2016.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Tracing the diversification history of a Neogene rodent invasion into South America

2018

View full text Add to dashboard Cite

We investigated spatial patterns of evolutionary relatedness and diversification rates to test hypotheses about the historical biogeographic processes underlying the radiation of Neotropical rats and mice (Sigmodontinae, ~400 species). A negative correlation between mean phylogenetic distance and diversification rates of rodent assemblages reveals a pattern of species co-occurrence in which assemblages of closely related species are also the fastest diversifying ones. Subregions of the Neotropics occupied by distantly related species that are on average more slowly diversifying include Central America, northern South America, and the Atlantic forest. In southern South America, recent species turnover appears to have been higher. Ancestral locations for the main tribes of sigmodontines were also estimated, suggesting eastern South America and the Amazonian lowlands were colonized before some central Andean regions, even though the latter are now centers of species richness for these rodents. Moreover, a past connection between the tropical Andes and the Atlantic Forest is suggested by our results, highlighting a role for a hypothetical arc connecting the two biomes, which would have impacted many other groups of organisms. Whether rapid, recent speciation in some regions is related to Quaternary climatic fluctuations and the young age of sigmodontines (~12.7 Ma crown age) or instead to intrinsic traits of these rodents remains an open question. If the former is true, we hypothesize that contrasting trends will characterize older Neotropical clades.

show abstract

Section: Sigmodontine Biogeographical Historysupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Tracing the diversification history of a Neogene rodent invasion into South America

2018

View full text Add to dashboard Cite

show abstract

“…Calassomys apicalis is endemic to the Cerrado, and has been recorded only in the Brazilian state of Minas Gerais (Pardiñas et al 2014). …”

Section: Resultsmentioning

confidence: 99%

The mammalian faunas endemic to the Cerrado and the Caatinga

Gutiérrez¹,

Marinho‐Filho²

2017

View full text Add to dashboard Cite

Citation: Gutiérrez EE, Marinho-Filho J (2017) The mammalian faunas endemic to the Cerrado and the Caatinga. ZooKeys 644: 105-157. https://doi.org/10.3897/zookeys.644.10827 AbstractWe undertook a comprehensive, critical review of literature concerning the distribution, conservation status, and taxonomy of species of mammals endemic to the Cerrado and the Caatinga, the two largest biomes of the South American Dry-Diagonal. We present species accounts and lists of species, which we built with criteria that, in our opinion, yielded results with increased scientific rigor relative to previously published lists -e.g., excluding nominal taxa whose statuses as species have been claimed only on the basis of unpublished data, incomplete taxonomic work, or weak evidence. For various taxa, we provided arguments regarding species distributions, conservation and taxonomic statuses previously lacking in the literature. Two major findings are worth highlighting. First, we unveil the existence of a group of species endemic to both the Cerrado and the Caatinga (i.e., present in both biomes and absent in all other biomes). From the biogeographic point of view, this group, herein referred to as Caatinga-Cerrado endemics, deserves attention as a unit -just as in case of the Caatinga-only and the Cerrado-only endemics. We present preliminary hypotheses on the origin of these three endemic faunas (Cerrado-only, Caatingaonly, and Caatinga-Cerrado endemics). Secondly, we discovered that a substantial portion of the endemic mammalian faunas of the Caatinga and the Cerrado faces risks of extinction that are unrecognized in the highly influential Red List of Threatened Species published by the International Union for Conservation of Nature (IUCN). "Data deficient" is a category that misrepresents the real risks of extinction of these species considering that (a) some of these species are known only from a handful of specimens collected in a single or a few localities long ago; (b) the Cerrado and the Caatinga have been sufficiently sampled to guarantee collection of additional specimens of these species if they were abundant; (c) natural habitats RESEARCH ARTICLE Launched to accelerate biodiversity research A peer-reviewed open-access journalEliécer E. Gutiérrez & Jader Marinho-Filho / ZooKeys 644: 105-157 (2017) 106 of the Cerrado and the Caatinga have been substantially altered or lost in recent decades. Failures either in the design of the IUCN criteria or in their application to assign categories of extinction risks represent an additional important threat to these endemic faunas because their real risks of extinctions become hidden. It is imperative to correct this situation, particularly considering that these species are associated to habitats that are experiencing fast transformation into areas for agriculture, at an unbearable cost for biodiversity.

show abstract

“…were recognized based on new karyotypes associated to the monophyly of the samples. Even new genera were described based on multidisciplinary approaches: Drymoreomys (Percequillo et al 2011) and Calassomys (Pardiñas et al 2014). …”

Section: Discussionmentioning

confidence: 99%

Advances in cytogenetics of Brazilian rodents: cytotaxonomy, chromosome evolution and new karyotypic data

Di-Nizo¹,

Banci²,

Sato-Kuwabara³

et al. 2017

CCG

View full text Add to dashboard Cite

Rodents constitute one of the most diversified mammalian orders. Due to the morphological similarity in many of the groups, their taxonomy is controversial. Karyotype information proved to be an important tool for distinguishing some species because some of them are species-specific. Additionally, rodents can be an excellent model for chromosome evolution studies since many rearrangements have been described in this group.This work brings a review of cytogenetic data of Brazilian rodents, with information about diploid and fundamental numbers, polymorphisms, and geographical distribution. We point out that, even with the recent efforts on cytogenetic studies in this group, many species lack karyotypic data. Moreover, we describe for the first time the karyotype of Carterodon sulcidens (Lund, 1838) (Family Echimyidae), a new fundamental number for an undescribed species of Neacomys Thomas, 1900 (Family Cricetidae, Subfamily Sigmodontinae), and illustrate the karyotype of a Brazilian specimen of Mus musculus Linnaeus, 1758 (Family Muridae). This review compiles the cytogenetic data on Brazilian rodents reported in the last three decades, after the last revision published in 1984, including synonyms, chromosomal variations, and geographic distribution. Additionally, it also reinforces that Brazilian biodiversity is still poorly known, considering the new data reported here.

show abstract

A new genus of sigmodontine rodent from eastern Brazil and the origin of the tribe Phyllotini

Cited by 37 publications

References 29 publications

Tracing the diversification history of a Neogene rodent invasion into South America

Tracing the diversification history of a Neogene rodent invasion into South America

The mammalian faunas endemic to the Cerrado and the Caatinga

Advances in cytogenetics of Brazilian rodents: cytotaxonomy, chromosome evolution and new karyotypic data

Contact Info

Product

Resources

About